I am not deciding to conduct this conversion anytime soon but I would like to mention that my WD45 is very difficult to steer, especially when I have a 1000# hay bale on its spear which has been bucket-mounted. My unit is manual steering and making a turn that is more than a gradual arc is close to impossible without having to use the brakes.
I have been considering that having power steering would be regarded as a useful upgrade. Not so long ago I was replacing the steering-rack in a car for my daughter and while I was doing this I thought to myself that with a bit of retro-engineering, some welded brackets along with a mounting plate, some extended tie-rods and a p/s pump that is mounted that runs off the fan-belt, I may have success. I would like to ask if anyone has tried this and how heavy duty would a vehicle need to be if I took out the steering rack for my tractor?